Condensed Consolidated Balance Sheets (USD $)	Jun. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 21,188,100	$ 18,208,659
Accounts receivable, other	222,628	633,216
Prepaid expenses and other current assets	842,738	236,112
Total current assets	22,253,466	19,077,987
Equipment, net	3,344,353	3,424,869
Goodwill	2,715,000	2,715,000
Other intangible assets:
Licenses	1,900,000	1,900,000
Acquired product rights	8,000,000	8,000,000
Accumulated amortization	(3,304,147)	(2,858,657)
Total other intangible assets	6,595,853	7,041,343
Derivative asset, warrant (note 6)	590,540	1,299,031
Other assets	21,976	21,976
Total assets	35,521,188	33,580,206
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued liabilities, other	5,402,673	4,656,295
Deferred revenue, current	12,523,099	12,491,907
Derivative liabilities (note 6)	3,385,199	4,989,993
Total current liabilities	21,310,971	22,138,195
Deferred revenue, long-term	1,660,401	1,655,681
Total liabilities	22,971,372	23,793,876
Commitments and contingencies
Stockholders' equity:
Common Stock, $.001 par value; 45,000,000 shares authorized, 29,577,146 and 24,038,445 shares issued; 29,561,655 and 24,022,954 shares outstanding in 2011 and 2010, respectively	29,578	24,039
Additional paid-in capital	98,931,543	82,055,934
Treasury stock, at cost, 15,491 shares, 2011 and 2010	(47,183)	(47,183)
Accumulated deficit	(86,364,122)	(72,246,460)
Total stockholders' equity	12,549,816	9,786,330
Total liabilities and stockholders' equity	$ 35,521,188	$ 33,580,206